Continuous strip pickling and cleaning device



March 11, 1941. F WOOD 2,234,815

CONTINUOUS STRIP PICKLING AND 'CLEANING DEVICE Filed D60. 20, 1959 5 Sheets-Sheet l Swxd@ RN www. NN

F. J. WOOD March H, 1941..

CONTINUOUS STRIP PICKLING AND CLEANING DEVICE Filed Dec. 20, 1939 3 Sheets-Sheet 2 ATTORNEY March 11, 1941. v F. J. WOOD CONTINUOUS STRIP PICKLING AND CLEANING DEVICE Filed Dec. 20, 1959 3 Sheets-Sheet 3 ATTORNEY lill atented Mar. 11, 1941 UNITED STATES CONTINUOUS STRIP PICKLIN G AND CLEANING DEVICE Frank J. Wood, Riverside, Ill., assignor to Goodman Manufacturing Company, Chicago, IIL, a

corporation of Illinois Application December 20, 1939, Serial No. 310,132

6 Claims.

l'lhis invention relates to improvements in con tlnuous strip pickling and cleaning devices, and more particularly to improvements ln construction of the acid tank and trough for such a device.

The principal objects of my invention are to provide an acid tank and trough for a continuous strip pickling and cleaning device, having a tank made from brick or other similar material impervious to the effects of the acid in the pickling solution and having a pickling trough, through which the metal passes during the pickling operation, recessed in said tank, and consist-m ing ot sectional side walls made from a material impervious to the eiiects of the acid in the pick-a llng solution and to the abrasive action of the edges of the strip of metal passing through the pickling trough, and a bottom made from areln atlvely smooth non-scratching material impervious to the elects ot the acid in the pickling solution.

n more specic object of my lnventionis to provide a pickling and cleaning tank and trough oi the character described, `wherein the hottom ol the trough consists of a plurality of spaced apart aligned bottom members madefrom a nonscratchlng material impervious to the effects of the acid in the pickling solution, and wherein the space loetween said members is closed hy transversely extending nozzles, llor conducting piclrling huid into said trough under pressure.

Other objects oi my invention will appear trom time to time as the following specification proseeds and with reference to the accompanying drawings wherein:

Figure l is a plan view of a pickling tank constructed in accordance with my invention;

llllgure d ls a longitudinal sectional view taken through the plckling tank;

ll'lgure 3 is au enlarged transverse sectional view taken suhstantially along line t-t of Figure l.;

litigare t is a detail view in transverse section,

showing certain detalls of construction of the lille 6 is anenlarged fragmentary longitudinal sectional view taken through one of the plclrling troughs and showing certain details ot the nozzles and the construction of the bottom oi the trough; and

liigine l is a transverse sectional' view taken substantially along line 1--1 of Figure 6.

heter-ring now in particular to the embodiment,4

ci my invention illustrated ii'ithe drawings, a

pickling tank l0, adapted to serve as a container for the pickling fluid, is provided. Said tank, as herein shown, contains two compartments, one

of which is indicated hy reference character liv narrow strips of metal. Pinch rolls l5, l5 are provided at the entering ends of said troughs, Vfor pushing the metal through said troughs, yand pinch or squeegee rolls lt, lli are provided at the discharge ends ci said troughs, lor squeezing the acid from the metal as it comes from the pickling4 bath. Guides generally indicated hy reference character lll are provided at the discharge ends of said troughs, to guide the metal against vertical and lateral displacement. Said guides are similar in construction to those shown in my prior lPatent No. 2,141,732, which issued December 27, l93d, so will not herein he shown or described in detail. l

With reference now in particular to the details of construction oi the pickling tank ld, said tank, as herein shown, has a steel outer shell t9, of a rectangular loi-mation, mounted in a supporting lramework. Said framework includes a plurality of spaced apart l-heams ll, tl, secured to a suitable foundation, and upright side :trame niemhers tt, llt mounted on the ends ol' said lloeams and extending upwardly along the sides oi said shell. Said side frame niemloers are connected together hy channels tt, lt extending along the upper ends ol said side trame memhers..

The shell lt is provided with a lining, impervious to the edects ol acid in the pickling sointion, which includes an inner expansible and con-u tractihle g disposed next to the inside of said shell and indicated generally ley reference charcoter tt, and an outer hrick or cement liningnext to said resilient erpanslble lining and indicated generally hy reference character t4.

The inner g lt may he a ruloher, asphalt, or other like material, which will permit independent expansion and contraction ci the shell and outer lining thereof.

The outer lining tt may be a cement impervious to the ehects ol the acid in the pickling solutlon or acid resisting loricks set in sulphur ce-V for side wail sections 29, 260i the pickling trough I2 and for side wall sections 86, at oi one pickling trough ld respectively.. Opposite sides of the center dividing wall 21 lare recessed to re ceive a support for the other side wall sections 29, 29 of the pickling trough l2 and for side wall sections 3U, 3Ii of the other pickling trough lf3.

Referring now in particular to the novel construction of the pickling troughs i2 and Ml, id, the side wall sections 26 and 36 are of a similar construction and are mounted in the walls 25, 26 and 21 in a similar manner, so the side wall sections 29, 2S` onlylneed -herein be described in detail. Said side wall sections, as herein shown, are made from a material impervious to the effects of the acid in theA pickling solution and to the abrasive action of the edges of the metal when passing through the pickling trough. One type of material from which said sections may be made, is a cast iron having a high silicon content.

Each section 29 has an outwardly iiared shouldered forward end 3|, within which the rear end of the next forward side wall isadapted to lit and be cemented thereto, to `form an overlapping tight joint between said sections (see Figure A pair of spaced apart lugs 33, 33 project outwardly from each of said side wall sections to securely mount said sections in recesses formed in said side walls. Said lugs may be cemented in said recesses by means of any suitable cement impervious to the eiects of the acid in -the pickling solution. Each side wall section also has an outwardly ared shouldered upper portion 34, adapted to form a recess to receive one side of a lsectional cover 35 for the trough I2.

The lower ends of the side wall sections'29, 29 are of an angular or vL-shapedformation, and the base thereof extends inwardly along the shouldered portion of the side wall of the tank I6 and is adapted to have an end of a bottom section 36 of the trough mounted thereon, l

The inner walls of the troughs I4, I4 are formed from pairs of abutting side wall sections 38, 38, which are secured together adjacent their upper ends by means of nuts and bolts 39 (see Figure 3). Said side wall sections are supported at their lower ends on a supporting member 40 extending longitudinally along the compartment I3 and supported on spaced apart transversely extending beams 4 I, 4I. Said beams are mounted at their ends in the side walls 25 and 26 oi' the tank compartment I3. Sectional bottom pieces 43 are supported on the lower inwardly extending ends of said side Wall sections and the side wall sections 30, 30, and covers 44, 44 are mounted in recessed upper outwardly flared ends of said side wall sections.

The sectional bottom pieces 36 and 43 of the troughs I2 and I4, I4 are of a similar construction except as to size, so the bottom pieces 36, 36

only will herein be described in detail. Each bottom piece 36 is made from a material having a smooth upper surface impervious to the effects of the acid in the pickling solution and preferably a plastic. Said plastic may consist of any of the apart transversely extending beams, such as 'ductors 51 and 58.

esagera channels d5, d5. Spaces are provided between adjacent ends of each of said bottom pieces and said spaces are closed by uld nozzles 41, 41. Said side wall pieces may be cemented to said side wall sections and -to said nozzles by a cement impervious to the effects of the acid in the pickling solution, to form Afluid-tight joints between said bottom. pieces, side walls, and nozzles.

The uid nozzles fil, 51, as herein shown, extend across the compartment il and open in the direction of travel oi the metal through the pickling trough, to direct the fluid in the direction of travel of the metal through the pickling solution. The inner ends of said nozzles are mounted in the dividing wall 21, while the opposite portions thereof extend through and upwardly along the outer side wall 25. Said nozzles may be cemented in said side walls with an acid resisting cement.

Each nozzle d1, as herein shown, has a widened upper portion having a shouldered step-shaped advance side 49 and a shouldered rear side 50, with the fluid passageways directed to open in the direction of said rear side. Said advance side is adapted to be engaged by an adjacent shouldered end of a bottom' piece 36. Said rear side is adapted torbe engaged by an advance end of the next adjacent bottom piece. Said advance end is beveled in a direction to permit the free flow of fluid from therespective nozzle in the direction of travel of the metal through the trough.

A discharge end bottom piece 53 is provided at the discharge end of each pickling trough and has opposite beveled ends, as is clearly shown in Figure 6. An advance endbottom piecev 54 is provided at the' entering end of each pickling trough. Said advance end bottom piece has a downwardly inclined advance end 55 at the entering end oi the trough, and has an opposite shouldered end formed similar to the shouldered ends of the bottom pieces 36, 36 (see Figure 2).

Fluids may be conducted from the pickling tank I0 to the nozzles 41, 41 and to nozzles 56, 56 of the pickling troughs I4, I4, through fluid con- The uid conductor 51 leads from the compartment I3 to a pump 59, herein shown as being a centrifugal pump of an ordinary construction, Fluid is conducted from said pump to the respective nozzles 56, 56 by means of a conductor 60 leading to longitudinally extending branch Aconductors 6 I, 6I (see Figure 1) The fluid conductor 58 leads from the compartment II to a pump 63. Fluid is conducted from said pump to the respective nozzles 41, 4l by means of a conductor 64 leading to longitudinally extending branch conductors 65, 65.

It may be seen from the foregoing that a piekling tank construction has been provided which includes a tank lined with an acid resisting material and so formed as to have pickling troughs recessed in the upper ends of the lining thereof. It may also be seen that the pickling troughs are of a sectional construction, so arranged that they may readily be assembled and be rigidly supported in the sides of the tank. It may further be seen that the sectional sides of each trough are so constructed that they may be made from a material impervious to the effects of acid in the pickling solution and to the abrasive action of the edges of -the strip metal, and that the sectional vbottom of each trough is constructed from a smooth non-scratching acid resisting material, impervious to the eiects of the acid in the pickling solution, having the pickling nozzles recessed assassin 3 beneath the upper surfaces of said bottom and interposed between each bottom section, in order to provide a .smooth slmpiiiied form of nonscratching bottom for the trough, i

While I have herein shown and described one form in which my invention may be embodied.

'it will be understood that the construction thereof and the arrangement of the various parts may be altered without departing from the spirit and scope thereof. Furthermore, I do not wish to be construed as limiting my invention to the specic embodiment illustrated, excepting as it may be limited in the appended claims.

I claim as my invention:

l. In combination, a pickling tank, and a' trough through which the metal is adapted to pass while being pickled, extending along said tank, the side walls of said trough including a plurality of interengaging aligned side wall members constructed from a ferrous material impervious to the effects oi acid in the pickling solution and to the abrasive action oi the edges of the metal when passing through the pickling trough, the bottom of said trough including a plurality of spaced apart-aligned bottom'pieces engaging said side walls at their opposite edges and supported by said side walls and constructed from a relatively smooth non-scratching plas,

tic material impervious to the effects of acid in the pickling solution, and transversely extending nozzles bridging the gaps between said bottom pieces, for conducting pickling tiuid under pressure to said trough in the direction oi travel of the metal therethrough, said nozzles being disposed beneath the tops of said bottom pieces.

E. In combination, a pickling tank, and a pickling trough mounted above and extending along saidtank, said trough including a pluralityxof aligned interengaging side walls mounted in and extending along opposite side walls of said tank and constructed from a ferrous material impervious to the effects of acid in the pickling solution and to the abrasive action oi the metal when passing through the pickling trough, and the bottom of said trough including a plurality oi aligned bottom pieces engaging said metallic side walls at\ their opposite edges and supported by said side walls and constructed from a relativelyr smooth non-scratching plastic material impervious to the effects of acid in the pickling solution.

3. In combination, a pickling tank, and a pickling trough mounted above and extending along said tank, said trough including a plurality of aligned lnterengaging side walls mounted in and extending along opposite side walls of said tank and constructed 'from a ierrousmaterial imperviousV to the eiects of acid in the pickling solution and to the abrasive action of the metal when passing through the pickling trough, a pluralityl of spaced apart nozzles extending transversely between said side walls, and a plurality of bottom pieces mounted in the spaces between said nozzles, said bottom pieces being constructed `from a relatively smooth non-'scratching plastic material impervious to the eilects of acid in the pickling solution -and having beveled advance liaces adjacent the openings in said nozzles, and

' trough.

side walls mounted in and extending along opposite side walls of said tank and constructed from a ferrous material impervious to the effects of acid in thepickling solution and to the abrasive action of the metal when passing through the pickling trough, and the bottom of said trough including a4 plurality 'of aligned bottom pieces supported by and engaging said metallic side Walls at their opposite edges and constructed from a relatively smoothv non-scratching plastic material impervious to Athe effects of acid in the pickling solution, overlapping connections between the ends of adjacent side Walls, each of said side walls of said tank having an upper shoulderedportion extending therealong adapted to receive the side walls of said trough and provided with a plurality of spaced apart recessed portions, and each side wall of said trough having Y above and extending along said tank, said trough including a plurality oi.' aligned interengaging side walls mounted in and extending along opposite side walls of said tank and constructed from a ferrous material impervious to the effects of acid in the pickling solution and to the abrasive action of the metal when passing through the pickling trough, and the bottom of said trough including a plurality of aligned bottom pieces supported by and engaging said metallic side walls at their opposite edges and constructed from a relatively smooth'non-scratching plastic material impervious tothe effects of acid in the pickling solution, eachoi said side walls of said tank having an upper shouldered portion extending therealong adapted to receive the side walls oi! said trough and provided with a plurality of spaced apart recessed portions, and each side wall of said trough having a lug projecting outwardly therefrom adaptedto engage a recess in one of said recessed portions of said tank, overlapping connections between the ends of adjacent side walls, and iiuid nozzles extendlng across said troughs and disposed between adjacent ends of'said bottom pieces.

6. In an apparatus of the class described, a pickling trough adapted to be mounted on and extend along the top of a pickling tank and have strip metal pass therethrough during the pickling operation, the side walls of said trough including a plurality of interengasing aligned side wall members, the bottom of said tank including a plurality of spaced apart aligned bottom pieces engaging said side walls at their edges and supported thereby, and transversely extending fluid nozzles bridging the gaps between said` bottom pieces, for conducting pickling fluid under pressure to said trough in the direction of travel of the metal therethrough, said nozzles being disposed beneath the tops oi said bottom pieces.

FRANK J. WOOD., 

